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Automatic device and method for chemically purifying graphite

An automated device and chemical purification technology, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of environmental pollution of reagent waste, waste of reagent resources, low power consumption, etc., to reduce environmental protection treatment, market price Low, labor-saving effect

Pending Publication Date: 2020-01-24
曹勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of the present invention purifies graphite raw materials with a carbon content > 60%, and obtains graphite with a purity greater than 99.9991%, ash powder < 1PPM, and trace elements < 0.5PPM, which has the advantages of simple process, easy operation, high production efficiency and low power consumption. , does not require large-scale processing equipment, and saves production costs; but although the purification method improves the purity to 99.99%, it reduces costs, saves the use of reagents and protects the environment. The method in the above patent is the same as that used in the existing industry The method must use three reagents in the primary reaction, such as hydrofluoric acid, nitric acid, and hydrochloric acid, and the amount of reagents used is large, which will cause waste of reagent resources, and the remaining reagent waste may cause environmental pollution.

Method used

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  • Automatic device and method for chemically purifying graphite
  • Automatic device and method for chemically purifying graphite
  • Automatic device and method for chemically purifying graphite

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0058] Start the automatic metering device 2, add 120 kg of chemical reagent 1# hydrofluoric acid with a content of 40%, 600 kg of demineralized water, and 600 kg of natural flake graphite with a specification of -195 into the primary reactor 4 through the metering device 2, and the action of the metering device 2 triggers the second stirring The mixer 5 and the heating valve 3 are turned on to start working, stir and heat until the temperature rises to 90°C, the temperature controller acts to close the heating valve 3, close the second stirrer 5, keep the temperature not lower than 80°C in airtight, and let it stand for 12 hours to react ; the reaction time is over, the time relay action primary reactor 4 discharge valves are opened, and the high-pressure delivery pump 6 connected is started, and the mixed slurry is squeezed into the high-pressure diaphragm filter 8, and when the pressure reaches 0.4MPa, the pure water tank 19 The valve of the filter cake is opened to clean th...

experiment example 2

[0065] Start the automatic metering device 2 and add 150 kg of industrially pure ammonium fluoride with a chemical reagent 1# content of 96%, 750 kg of demineralized water, and 500 kg of spherical graphite with a carbon content of 95% and a specification of SG17 into the primary reactor 4 through the metering device 2 The action of the metering device 2 triggers the opening of the second agitator 5 and the heating valve 3 to start working, stirring and heating until the temperature rises to 90°C, the temperature controller operates to close the heating valve 3, and the second agitator 5 is closed to keep the temperature not low Stand at 80°C for 10 hours; when the temperature is 80-90°C, ammonium fluoride in hot water decomposes, hydrogen fluoride and ammonia gas, a large amount of hydrogen fluoride dissolves in water to form concentrated hydrofluoric acid, and impurities in graphite A chemical reaction occurs, the reaction time is over, the time relay operates the discharge va...

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PUM

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Abstract

The invention discloses an automatic device and a method for chemically purifying graphite, and belongs to the field of graphite purification. The automatic device for chemically purifying graphite comprises a primary reactor, a high-pressure delivery pump, a high-pressure diaphragm filter, a first normal-pressure delivery pump, a secondary reactor, a second normal-pressure delivery pump, an elevated tank device, a centrifugal filter and a finished product bin. The method for chemically purifying graphite mainly comprises the following steps: S1, weighing a chemical reagent 1 # in a first reagent tank, water in a pure water tank and graphite powder in a graphite powder tank at a ratio of (0.1-0.5): (0.5-1): 1 using a metering device, and receiving accurate weighing signals by using an integrated control processor. According to the invention, environmental protection treatment cost is reduced, and production cost is reduced; the integrated control processor is used in the production device to control the whole production process, computer control is adopted, automation of the whole process is achieved, production personnel are not needed in the whole device process, labor cost is saved, and cost is reduced.

Description

technical field [0001] The invention relates to the technical field of graphite purification, in particular to an automatic device and method for chemically purifying graphite. Background technique [0002] With the in-depth development of my country's economic reform, the theme of economic restructuring, quality improvement, and environmental protection has become more and more prominent and strict; if environmental protection facilities are not up to standard, and environmental protection measures are not up to standard, it will be difficult to survive. With the rapid development of my country's economy, the macro economy has entered In the stage of stable and medium-low speed development, the micro-economy has entered the era of meager profits. Therefore, enterprise innovation must aim at protecting the environment and reducing costs in order to survive and develop. The field of new materials is a field that is supported by the state. Graphite is an important new material. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/215
CPCC01B32/215
Inventor 曹勇
Owner 曹勇